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CVE-2026-76928

NULL Pointer Dereference in Wireshark

Published: Aug 19, 2026Updated: Aug 31, 2026 Sources: CVE List NVDCWE-476
7.5HIGH
NVD MITRE
EPSS Score
0.3%
Top 79.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

X.509IF protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-476

Affected Products

Wireshark Foundation
oss-projectaka wireshark, editcap
WiresharkOn-premDesktop App
Security Products
wireshark
oss-project·US
wiresharkOn-premDesktop App
Networking Infrastructure / network-management

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://www.wireshark.org/security/wnpa-sec-2026-87.html
wireshark.org
https://gitlab.com/wireshark/wireshark/-/work_items/21469
gitlab.com

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